44220220 has 96 divisors (see below), whose sum is σ = 108864000. Its totient is φ = 14918400.

The previous prime is 44220203. The next prime is 44220221. The reversal of 44220220 is 2202244.

It is a junction number, because it is equal to n+sod(n) for n = 44220194 and 44220203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44220221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 296706 + ... + 296854.

It is an arithmetic number, because the mean of its divisors is an integer number (1134000).

Almost surely, 2^44220220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44220220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54432000).

44220220 is an abundant number, since it is smaller than the sum of its proper divisors (64643780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

44220220 is a wasteful number, since it uses less digits than its factorization.

44220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 44220220 is about 6649.8285692189. The cubic root of 44220220 is about 353.6228334217.

Adding to 44220220 its reverse (2202244), we get a palindrome (46422464).

It can be divided in two parts, 4 and 4220220, that added together give a palindrome (4220224).

The spelling of 44220220 in words is "forty-four million, two hundred twenty thousand, two hundred twenty".